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jsPerf.app is an online JavaScript performance benchmark test runner & jsperf.com mirror. It is a complete rewrite in homage to the once excellent jsperf.com now with hopefully a more modern & maintainable codebase.

jsperf.com URLs are mirrored at the same path, e.g:

https://jsperf.com/negative-modulo/2

Can be accessed at:

https://jsperf.app/negative-modulo/2

Test case details

Title *

Description
(Markdown syntax is allowed)

Preparation Code

Preparation HTML
(this will be inserted in the <body> of a valid HTML5 document in standards mode)
(useful when testing DOM operations or including libraries)

Setup JS

Teardown JS

Test cases

Test #1

Title *

Async

Code *

if (/a/.exec("xxxxxxxxxabcxxxxxxabcxx") !== null && /b/.exec("xxxxxxxxxabcxxxxxxabcxx") !== null) {
  // String matches regex
}

Test #2

Title *

Async

Code *

if ("xxxxxxxxxabcxxxxxxabcxx".match("a") !== null && "xxxxxxxxxabcxxxxxxabcxx".match("b") !== null) {
  // String matches regex
}

Test #3

Title *

Async

Code *

if (/a/.test("xxxxxxxxxabcxxxxxxabcxx") !== false && /b/.test("xxxxxxxxxabcxxxxxxabcxx") !== false) {
  // String matches regex
}

Test #4

Title *

Async

Code *

if (("xxxxxxxxxabcxxxxxxabcxx").search("a") !== -1 && ("xxxxxxxxxabcxxxxxxabcxx").search("b") !== -1) {
  // String matches regex
}

Test #5

Title *

Async

Code *

if ("xxxxxxxxxabcxxxxxxabcxx".indexOf("a") !== -1 && "xxxxxxxxxabcxxxxxxabcxx".indexOf("b") !== -1) {
  // String matches regex
}

Test #6

Title *

Async

Code *

if ("xxxxxxxxxabcxxxxxxabcxx".match("a") && "xxxxxxxxxabcxxxxxxabcxx".match("a")) {
  // String matches regex
}